<template>
    <div  class="app-container">
    <el-table
        :data="list"
        style="width: 100%"
        row-key="id"
        border
        lazy
        :load="load"
        :tree-props="{children: 'children', hasChildren: 'hasChildren'}">
        <el-table-column
        prop="title"
        label="名称"
        width="150">
        </el-table-column>
        <el-table-column
        prop="createTime"
        label="创建时间">
        </el-table-column>
    </el-table>
    <!-- 导出数据库的课表 -->
    <div class="el-toolbar">  
          <div class="el-toolbar-body" style="justify-content: flex-start;">   
          <el-button type="text" @click="exportData"><i class="fa fa-plus"/> 导出</el-button> 
          <el-button type="text" @click="importData"><i class="fa fa-plus"/> 导入</el-button>
          <el-dialog title="导入" :visible.sync="dialogImportVisible" width="480px">
          <el-form label-position="right" label-width="170px">
         <el-form-item label="文件">
        <el-upload
            :multiple="false"
            :on-success="onUploadSuccess"
            :action="'http://localhost:8200/vod/teacher/subject/inputData'"
            class="upload-demo">
             <el-button size="small" type="primary">点击上传</el-button>
           <div slot="tip" class="el-upload__tip">只能上传xls文件，且不超过500kb</div>
            </el-upload>
           </el-form-item>
           </el-form>
         <div slot="footer" class="dialog-footer">
             <el-button @click="dialogImportVisible = false">取消</el-button>
         </div>
         </el-dialog>
         </div>
    </div>
   </div> 
</template>

<script>
import subjectApi from '@/api/vod/subject'
export default {
    data() {
        return {
            dialogImportVisible: false,
            list:[] //数据字典列表数组
        }
    },
    created() {
        this.getSubList(0)
    },
    methods: {
    exportData(){
            window.open("http://localhost:8200/vod/teacher/subject/exportData")
        },
        //数据字典列表
    getSubList(id) {
            subjectApi.getChildList(id)
                .then(response => {
                    this.list = response.data
                })
        },
    load(tree, treeNode, resolve) {
            subjectApi.getChildList(tree.id).then(response => {
                resolve(response.data)
            })
      },
    importData() {
      this.dialogImportVisible = true
     },
     onUploadSuccess(response, file) {
           this.$message.info('上传成功')
          this.dialogImportVisible = false
          this.getSubList(0)
},   
    }
}
</script>